2 activities::verify_person_in_community,
3 check_is_apub_id_valid,
4 fetcher::object_id::ObjectId,
6 objects::{page::Page, tombstone::Tombstone},
11 use activitystreams::{
12 object::kind::{ImageType, PageType},
15 use chrono::NaiveDateTime;
16 use lemmy_api_common::blocking;
19 values::{MediaTypeHtml, MediaTypeMarkdown},
21 use lemmy_db_schema::{
26 post::{Post, PostForm},
31 request::fetch_site_data,
32 utils::{convert_datetime, markdown_to_html, remove_slurs},
35 use lemmy_websocket::LemmyContext;
39 #[derive(Clone, Debug)]
40 pub struct ApubPost(Post);
42 impl Deref for ApubPost {
44 fn deref(&self) -> &Self::Target {
49 impl From<Post> for ApubPost {
50 fn from(p: Post) -> Self {
55 #[async_trait::async_trait(?Send)]
56 impl ApubObject for ApubPost {
57 type DataType = LemmyContext;
59 type TombstoneType = Tombstone;
61 fn last_refreshed_at(&self) -> Option<NaiveDateTime> {
65 async fn read_from_apub_id(
67 context: &LemmyContext,
68 ) -> Result<Option<Self>, LemmyError> {
70 blocking(context.pool(), move |conn| {
71 Post::read_from_apub_id(conn, object_id)
78 async fn delete(self, context: &LemmyContext) -> Result<(), LemmyError> {
79 blocking(context.pool(), move |conn| {
80 Post::update_deleted(conn, self.id, true)
86 // Turn a Lemmy post into an ActivityPub page that can be sent out over the network.
87 async fn to_apub(&self, context: &LemmyContext) -> Result<Page, LemmyError> {
88 let creator_id = self.creator_id;
89 let creator = blocking(context.pool(), move |conn| Person::read(conn, creator_id)).await??;
90 let community_id = self.community_id;
91 let community = blocking(context.pool(), move |conn| {
92 Community::read(conn, community_id)
96 let source = self.body.clone().map(|body| Source {
98 media_type: MediaTypeMarkdown::Markdown,
100 let image = self.thumbnail_url.clone().map(|thumb| ImageObject {
101 kind: ImageType::Image,
106 r#type: PageType::Page,
107 id: self.ap_id.clone().into(),
108 attributed_to: ObjectId::new(creator.actor_id),
109 to: vec![community.actor_id.into(), public()],
110 name: self.name.clone(),
111 content: self.body.as_ref().map(|b| markdown_to_html(b)),
112 media_type: Some(MediaTypeHtml::Html),
114 url: self.url.clone().map(|u| u.into()),
116 comments_enabled: Some(!self.locked),
117 sensitive: Some(self.nsfw),
118 stickied: Some(self.stickied),
119 published: Some(convert_datetime(self.published)),
120 updated: self.updated.map(convert_datetime),
121 unparsed: Default::default(),
126 fn to_tombstone(&self) -> Result<Tombstone, LemmyError> {
129 self.updated.unwrap_or(self.published),
135 context: &LemmyContext,
136 expected_domain: &Url,
137 request_counter: &mut i32,
138 ) -> Result<ApubPost, LemmyError> {
139 // We can't verify the domain in case of mod action, because the mod may be on a different
140 // instance from the post author.
141 let ap_id = if page.is_mod_action(context).await? {
144 page.id(expected_domain)?
146 let ap_id = Some(ap_id.clone().into());
149 .dereference(context, request_counter)
151 let community = page.extract_community(context, request_counter).await?;
152 check_is_apub_id_valid(&page.id, community.local, &context.settings())?;
153 verify_person_in_community(&page.attributed_to, &community, context, request_counter).await?;
155 let thumbnail_url: Option<Url> = page.image.clone().map(|i| i.url);
156 let (metadata_res, pictrs_thumbnail) = if let Some(url) = &page.url {
157 fetch_site_data(context.client(), &context.settings(), Some(url)).await
159 (None, thumbnail_url)
161 let (embed_title, embed_description, embed_html) = metadata_res
162 .map(|u| (u.title, u.description, u.html))
163 .unwrap_or((None, None, None));
165 let body_slurs_removed = page
168 .map(|s| remove_slurs(&s.content, &context.settings().slur_regex()));
169 let form = PostForm {
170 name: page.name.clone(),
171 url: page.url.clone().map(|u| u.into()),
172 body: body_slurs_removed,
173 creator_id: creator.id,
174 community_id: community.id,
176 locked: page.comments_enabled.map(|e| !e),
177 published: page.published.map(|u| u.naive_local()),
178 updated: page.updated.map(|u| u.naive_local()),
180 nsfw: page.sensitive,
181 stickied: page.stickied,
185 thumbnail_url: pictrs_thumbnail.map(|u| u.into()),
189 let post = blocking(context.pool(), move |conn| Post::upsert(conn, &form)).await??;
197 use crate::objects::{
198 community::tests::parse_lemmy_community,
199 person::tests::parse_lemmy_person,
201 tests::{file_to_json_object, init_context},
203 use serial_test::serial;
207 async fn test_parse_lemmy_post() {
208 let context = init_context();
209 let community = parse_lemmy_community(&context).await;
210 let person = parse_lemmy_person(&context).await;
212 let json = file_to_json_object("assets/lemmy/objects/page.json");
213 let url = Url::parse("https://enterprise.lemmy.ml/post/55143").unwrap();
214 let mut request_counter = 0;
215 let post = ApubPost::from_apub(&json, &context, &url, &mut request_counter)
219 assert_eq!(post.ap_id.clone().into_inner(), url);
220 assert_eq!(post.name, "Post title");
221 assert!(post.body.is_some());
222 assert_eq!(post.body.as_ref().unwrap().len(), 45);
223 assert!(!post.locked);
224 assert!(post.stickied);
225 assert_eq!(request_counter, 0);
227 Post::delete(&*context.pool().get().unwrap(), post.id).unwrap();
228 Person::delete(&*context.pool().get().unwrap(), person.id).unwrap();
229 Community::delete(&*context.pool().get().unwrap(), community.id).unwrap();